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On 26 March 2015, Saudi Arabia, leading a coalition of nine countries from West Asia and North Africa, staged a military intervention in Yemen at the request of Yemeni president Abdrabbuh Mansur Hadi, who had been ousted from the capital, Sanaa, in September 2014 by Houthi insurgents during the Yemeni civil war. Efforts by the United Nations (UN) to facilitate a power sharing arrangement under a new transitional government collapsed, leading to escalating conflict between government forces, Houthi rebels, and other armed groups, which culminated in Hadi fleeing to Saudi Arabia shortly before it began military operations in the country.

The first month of the intervention, codenamed Operation Decisive Storm (Arabic: عملية عاصفة الحزم, romanized: Amaliyyat 'Āṣifat al-Ḥazm), consisted of airstrikes on Houthi rebels and a full blockade. On 22 April, the Saudi-led coalition declared that it had achieved its initial goals and announced Operation Restoring Hope, which would comprise a "combination of political, diplomatic and military action" while continuing "to prevent the Houthi militias from moving or undertaking any operations inside Yemen". Ground forces were subsequently deployed into the country as part of a broader offensive against both Houthi militants and loyalists of Hadi's predecessor, Ali Abdullah Saleh. Owing to Iran's support of these factions, the conflict is widely regarded as part of the broader Saudi-Iran proxy conflict.

Egypt, Morocco, Jordan, Sudan, and the United Arab Emirates provided air and ground forces, while Kuwait, Qatar, Bahrain, and U.S. private military contractor Constellis headed several ground operations. Djibouti, Eritrea, and Somalia opened their airspace, territorial waters, and military bases to coalition forces. At varying stages, the intervention was backed by the United States, United Kingdom, France, Germany, and Canada. The U.S. provided intelligence and logistical support, such as aerial refueling and search-and-rescue for downed coalition pilots, accelerated the sale of weapons to coalition states, and continued strikes against AQAP. American and British servicemen have provided advice and training related to Saudi-led airstrikes in Yemen.

The intervention drew criticism from some governments, international organizations,and human rights groups, which stated that it contributed to civilian casualties,damage to infrastructure, and the humanitarian situation in Yemen. Academics also dispute whether it violates Article 2(4) of the UN Charter. By 2019, the conflict was reported as a "military stalemate", and the following year, Saudi Arabia declared its first unilateral ceasefire. On 29 March 2022, the Saudi-led coalition announced that it would cease all hostilities within Yemen to facilitate political talks and peacekeeping efforts; Houthi and Saudi officials subsequently began bilateral peace talks mediated by Oman under UN auspices, and most restrictions on commercial goods were lifted by April 2023. As of April 2024, open hostilities have largely ceased, though negotiations are ongoing due to complications caused by Houthi attacks on Red Sea shipping since October 2023.